Jacola Wastewater Treatment Plant, Culiacán, Sinaloa, Mexico

Jacola is a wastewater treatment plant located in the town of Jacola, within the municipality of Culiacán, Sinaloa, Mexico. The plant serves a population of approximately 2,033 people, classifying it as a small-scale municipal facility. It operates under Mexico's national water regulations, which require secondary treatment for discharges into coastal waters. The plant provides secondary treatment, a standard biological process that removes organic matter and suspended solids. With a designed capacity of 267.84 m³/day and an actual discharge volume of 233.28 m³/day, the facility operates below its maximum capacity. As a coastal plant within 10 km of the Pacific Ocean, it must comply with Mexican Official Standard NOM-001-SEMARNAT-1996, which sets limits for pollutants in wastewater discharges to national waters. The treated effluent is discharged into the local watershed, which ultimately drains into the Pacific Ocean near the Gulf of California. This region supports diverse marine life, including commercially important fish species and migratory birds. Proper treatment helps protect coastal water quality and the ecological health of the adjacent marine environment.

The plant discharges into a local watercourse that flows into the Pacific Ocean via the Gulf of California. This coastal region is ecologically sensitive, supporting mangrove estuaries and nursery habitats for shrimp and fish. The Gulf of California is a biodiversity hotspot, and maintaining low nutrient and pathogen levels in treated effluent is critical to preventing eutrophication and protecting marine ecosystems.